on some RHEL Linux 8.X and Fedora 27 machines , we run into errors in test tools/jpackage/linux/LinuxResourceTest.java.

After 8314121, tools/jpackage/linux/LinuxResourceTest.java repeats.

error output :

java.lang.AssertionError: Expected [1]. Actual [2]: Check the package has 1 top installation directories
at jdk.jpackage.test.TKit.error(TKit.java:273)
at jdk.jpackage.test.TKit.assertEquals(TKit.java:576)
at jdk.jpackage.test.PackageTest$Handler.verifyRootCountInUnpackedPackage(PackageTest.java:705)
at jdk.jpackage.test.PackageTest$Handler.lambda$verifyPackageInstalled$3(PackageTest.java:635)
at java.base/java.util.Optional.ifPresent(Optional.java:178)
at jdk.jpackage.test.PackageTest$Handler.verifyPackageInstalled(PackageTest.java:633)
at jdk.jpackage.test.PackageTest$Handler.accept(PackageTest.java:592)
at jdk.jpackage.test.PackageTest$2.accept(PackageTest.java:504)
at jdk.jpackage.test.PackageTest$2.accept(PackageTest.java:411)
at jdk.jpackage.test.Functional$ThrowingConsumer.lambda$toConsumer$0(Functional.java:41)
at java.base/java.lang.Iterable.forEach(Iterable.java:75)
at jdk.jpackage.test.PackageTest.lambda$runActions$24(PackageTest.java:381)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
at jdk.jpackage.test.PackageTest.lambda$runActions$25(PackageTest.java:380)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
at jdk.jpackage.test.PackageTest.runActions(PackageTest.java:379)
at jdk.jpackage.test.RunnablePackageTest.run(RunnablePackageTest.java:58)
at LinuxResourceTest.testHardcodedProperties(LinuxResourceTest.java:136)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at jdk.jpackage.test.MethodCall.accept(MethodCall.java:145)
at jdk.jpackage.test.TestInstance.run(TestInstance.java:230)
at jdk.jpackage.test.TKit.lambda$ignoreExceptions$5(TKit.java:141)
at jdk.jpackage.test.TKit.lambda$runTests$3(TKit.java:126)
at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708)
at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762)
at jdk.jpackage.test.TKit.lambda$runTests$4(TKit.java:123)
at jdk.jpackage.test.Functional$ThrowingRunnable.lambda$toRunnable$0(Functional.java:105)
at jdk.jpackage.test.TKit.withExtraLogStream(TKit.java:109)
at jdk.jpackage.test.TKit.runTests(TKit.java:122)
at jdk.jpackage.test.Main.runTests(Main.java:79)
at jdk.jpackage.test.Main.lambda$main$2(Main.java:75)
at jdk.jpackage.test.Functional$ThrowingRunnable.lambda$toRunnable$0(Functional.java:105)
at jdk.jpackage.test.TKit.withExtraLogStream(TKit.java:109)
at jdk.jpackage.test.Main.main(Main.java:75)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
at java.base/java.lang.Thread.run(Thread.java:1570)
java.lang.RuntimeException: 1 FAILED TEST
at jdk.jpackage.test.Main.reportSummary(Main.java:130)
at jdk.jpackage.test.Main.runTests(Main.java:90)
at jdk.jpackage.test.Main.lambda$main$2(Main.java:75)
at jdk.jpackage.test.Functional$ThrowingRunnable.lambda$toRunnable$0(Functional.java:105)
at jdk.jpackage.test.TKit.withExtraLogStream(TKit.java:109)
at jdk.jpackage.test.Main.main(Main.java:75)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
at java.base/java.lang.Thread.run(Thread.java:1570)